There are no palmas either. Only delsIt should, or at least worth a try. They are pretty fish.
Who else here has a Palmas that we can ask about aggression?
When I was having aggression problems with mine everyone seemed surprised. Is the Palmas WC or CB?
Wait, you make it sound like they've had it for a little while with other Polys? Maybe ask how it does with them?

All the fish in the tank were WC, I struck lucky with my sen and the shipment time